Patent
   D330865
Priority
May 30 1991
Filed
May 30 1991
Issued
Nov 10 1992
Expiry
Nov 10 2006
Assg.orig
Entity
unknown
1
5
n/a
The ornamental design for a differential pressure indicator, as shown and described.

FIG. 1 is a top, front and right side perspective view of a differential pressure indicator showing our new design;

FIG. 2 is a bottom, rear and left side perspective view;

FIG. 3 is a top plan view;

FIG. 4 is a right side elevational view, the left side elevational view being identical;

FIG. 5 is a typical end elevational view; and,

FIG. 6 is a bottom plan view thereof.

Tosi, Robert B., Peletis, George N., MacPherson, Ronald E.

Patent Priority Assignee Title
D346124, Nov 18 1992 SENSORY MANAGEMENT SERVICES, LLC Breast compliance measuring device
Patent Priority Assignee Title
3568625,
4010708, Dec 02 1975 Trodyne Corporation Differential pressure indicator including remote sensing means
4029042, Feb 17 1976 Aircraft Systems Corporation Differential pressure indicator device
4445457, Oct 15 1981 Differential pressure indicator
4867095, Apr 05 1988 Parker Intangibles LLC Differential pressure indicator
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Executed onAssignorAssigneeConveyanceFrameReelDoc
Apr 11 1991PELETIS, GEORGE N WILKERSON CORPORATION A CORP OF COLORADOASSIGNMENT OF ASSIGNORS INTEREST 0057300768 pdf
Apr 11 1991TOSI, ROBERT B WILKERSON CORPORATION A CORP OF COLORADOASSIGNMENT OF ASSIGNORS INTEREST 0057300768 pdf
Apr 11 1991MACPHERSON, RONALD E WILKERSON CORPORATION A CORP OF COLORADOASSIGNMENT OF ASSIGNORS INTEREST 0057300768 pdf
May 30 1991Wilkerson Corporation(assignment on the face of the patent)
Jun 25 2001Wilkerson CorporationCKD-CREATEC CORPORATIONMERGER SEE DOCUMENT FOR DETAILS 0126070078 pdf
Jun 30 2001CKD-CREATEC CORPORATIONParker-Hannifin CorporationMERGER SEE DOCUMENT FOR DETAILS 0125980990 pdf
May 08 2002Parker-Hannifin CorporationPARKER HANNIFIN CUSTOMER SUPPORT INC ASSIGNMENT OF ASSIGNORS INTEREST SEE DOCUMENT FOR DETAILS 0129280198 pdf
Jun 30 2003PARKER HANNIFIN CUSTOMER SUPPORT INC Parker Intangibles LLCMERGER SEE DOCUMENT FOR DETAILS 0152150522 pdf
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